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Ratling [72]
3 years ago
6

Help with this please

Chemistry
1 answer:
Len [333]3 years ago
6 0

Answer:

12

Explanation:

There are 4 sulfur atoms in SO4

4×3=12

This means that it turns into 3×(SO4)

=3SO4

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Explanation:

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You have 100 g of Pb(NO3)2. How many moles is this?​
topjm [15]

Answer:

0.302 moles

Explanation:

Data given

Mass of Pb(NO₃)₂ = 100 g

Moles of Pb(NO₃)₂ = ?

Solution:

To find mole we have to know about molar mass of Pb(NO₃)₂  

So,

Molar mass of Pb(NO₃)₂  = 207 + 2[14 + 3(16)]

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Formula used :

                no. of moles = mass in grams / molar mass

Put values in above formula

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no. of moles of  Pb(NO₃)₂ = 0.302 moles

7 0
3 years ago
Which term describes the amount of order in a system
Ivahew [28]

Answer:

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